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<html>

<head>
	<title>第11课 父子通信</title>
  <style >
    .likes{
      background: pink;
  }
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</head>
<body>

  <div id="app"> 
   <!--  <alert msg="you~~~~"></alert> -->
 <alert username="whh111"></alert>

  </div > 

<script src="vue-2.4.0.js"></script>
<script src="js11.js"></script>
</body>
</html>